Welcome to CHR

Casting Number is for 1972-1979 454 two-bolt mains
TO501DWB
T= Tonawanda
05 = May
01 = 1st day of the month

DWB is not coming up - could it be CWB? If so it's from a 1973 Chevelle or Monte Carlo, 245 horsepower, automatic transmission

Nothing special, just a big block

Regards,Glenn